To make this code work, before you load the code, or even open the Arduino program, we need to place the "I2Cmaster" in your Arduino Library. If you don't know where that is by default, Look to the right.

Thank you sir, i done what you ve said, now the code is compiled but it showing that "Binary sketch size: 4,652 bytes (of a 28,672 byte maximum)" it doesnt show any value in my serial monitor. Actually i m working with ArduinoBT interfacing with MLX90614 IR Thermometer. Please help me.